Sir Iain Duncan Smith is the fifth longest-serving MP in Parliament, having been continuously elected since April 1992, and is the third longest-serving Conservative member of the current cohort. He cast 248 votes across 515 eligible divisions for a participation rate of 48.16%, ranking 356th overall among all MPs and 54th among Conservative members. His debate contributions are notably stronger, with 390 contributions across 163 debates in which he participated, ranking 142nd overall and leading all MPs elected in 1992, with particular focus on Foreign Affairs and Defence, International Development, and Justice and Law. There is a substantial divergence between his voting and debate activity, with his debate contributions significantly outpacing his voting participation.

Summary generated on 18/05/2026 (View details)